A. Blömer, Die reformierte Familie Wirts aus Jüchen und Priesterath, Mönchengladbach 1993, S. 5, 32
♥ = Vorfahren ___________________ | ___________________|___________________ | ___________________| ___________________ | | | | |___________________|___________________ | Friedrich BIERMANN | ___________________ | x1654 | | | | ___________________|___________________ | | | | |___________________| ___________________ | | | | |___________________|___________________ |--Katharina BIERMANN | (1655-1695)x1676 Veit MERTEN | | (1530-....)x1560 | Johannes WIRTZ | am BONGARD > | | (1560-....)x1580 (1540-1585) | Gerhard WIRTZ | | | (1585-1642)x1630 | Goddert GERHARDS | | | | | | | GERHARDS | N. | | x1580 | Wilhelmina WIRTZ | (1635-1676)x1654 | Werner COENTGES > ♥ | | (1550-1621)x1575 | Martin COENTGES | STROMMENGER > | | (1582-1652)x1605 | Isa COENTGES | ___________________ (1607-1670)x1630 | | | N. |___________________ x1605